Answer:
(a) people sought out the better public transportation options present in the suburbscities experienced a rise in
Explanation:
During the time period of 1950 - 1990 , a lot of migration was seen towards the suburbs .
The people were unemployed , and , they want to earn for their living , and the government of the suburbscities build highways , which turns out to be a good option for commuting .
Hence ,
The people migrated towards the suburbscities .